1200111222101 has 16 divisors (see below), whose sum is σ = 1366934382720. Its totient is φ = 1042963965120.

The previous prime is 1200111222083. The next prime is 1200111222119. The reversal of 1200111222101 is 1012221110021.

It is an interprime number because it is at equal distance from previous prime (1200111222083) and next prime (1200111222119).

It is not a de Polignac number, because 1200111222101 - 2¹⁴ = 1200111205717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200111222001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 955430 + ... + 1820183.

It is an arithmetic number, because the mean of its divisors is an integer number (85433398920).

Almost surely, 2^{1200111222101} is an apocalyptic number.

1200111222101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200111222101 is a deficient number, since it is larger than the sum of its proper divisors (166823160619).

1200111222101 is a wasteful number, since it uses less digits than its factorization.

1200111222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777356.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1200111222101 its reverse (1012221110021), we get a palindrome (2212332332122).

The spelling of 1200111222101 in words is "one trillion, two hundred billion, one hundred eleven million, two hundred twenty-two thousand, one hundred one".